Ipfilter problem

[Maurizio Fulli]

Hi guys,
i've an external application that generates a request on udp port 69, but this is a "root" port, so i've installaed ipfilter for swithing the request on 1040 port.
The application request is coming back on 1040 port, but i want to set a role, that answers on 69 port.
This is the role,
map lan0 x.x.x.x/32 port 69 -> x.x.x.x port 1040 udp
map lan0 x.x.x.x port 1040 -> x.x.x.x/32 port 69 udp.
But every time is simulate a request, i've a request loop! Is it possible to set this role on one and only row?

Regards
Maurizio